Constipation Relief with Soap Suds Enema

Indications and Positioning in Treatment Algorithm

The American College of Oncology recommends suppositories and enemas as preferred first-line therapy when digital rectal examination identifies a full rectum or fecal impaction 2, 1
Enemas should generally be used only if oral treatment fails after several days and to prevent fecal impaction, according to the American College of Oncology 3
The American College of Oncology suggests that small volume self-administered enemas are commercially available and often adequate, while larger volume clinician-administered enemas should be administered by an experienced health professional 1

The American College of Oncology recommends preparing soap solution enema with 1 mL of mild liquid soap per 200 mL of solution (1:200 ratio) with a total volume of 1000 mL 1
The primary mechanism of action of soap suds enema is to distend the rectum and moisten/soften feces, as stated by the American College of Oncology 1
Patients should be positioned to optimize gravity and comfort during administration, according to the American College of Oncology 4

The American College of Oncology warns that soap suds enema may cause chemical irritation of the mucous membranes 1
The American College of Oncology lists risks of soap suds enema, including perforation of the intestinal wall, rectal mucosal damage, and bacteremia 1
Patients on anticoagulation or with coagulation/platelet disorders are at risk of bleeding complications, as stated by the American College of Oncology 1

The American College of Oncology strongly endorses osmotic laxatives (PEG, lactulose, magnesium salts) as first-line options for constipation relief 2, 3
Stimulant laxatives (senna, cascara, bisacodyl) are also effective first-line options, according to the American College of Oncology 2
Suppositories containing glycerine, bisacodyl, or CO2-releasing compounds can be effective and less invasive for patients with a full rectum, as suggested by the American College of Oncology 3

The American College of Oncology recommends ensuring privacy and comfort for defecation, proper positioning, increased fluid intake, and physical activity within patient limits as non-pharmacological approaches to constipation relief 4
Abdominal massage has shown some efficacy in reducing gastrointestinal symptoms, according to the American College of Oncology 4
In advanced cancer patients, best practice is based on a balance between prevention strategies, self-care, and prescribed oral and rectal laxative therapy, as stated by the American College of Oncology 4

The American College of Oncology recommends that enemas should be administered by an experienced healthcare professional when using larger volumes 1
Monitor for abdominal pain during administration, which may indicate perforation, as warned by the American College of Oncology 1
Ensure the patient is in a comfortable position that facilitates retention of the enema for the required time, according to the American College of Oncology 4
For severe impaction, pre-medication with an analgesic or anxiolytic may be necessary if manual disimpaction is required, as suggested by the National Comprehensive Cancer Network 5